Chemically stable solid lithium ion conductor
AssigneeWerner Weppner
InventorsWerner Weppner, Venkataraman Thangadurai
Life of this patent
Estimating the term…
Abstract
The present invention concerns chemically stable solid lithium ion conductors, processes for their production and their use in batteries, accumulators, supercaps and electrochromic devices.
Claims11
A method of producing a battery, accumulator, supercap, fuel cell, sensor or electrochromic device having high energy density and chemical stability comprising incorporating a solid ion conductor having a garnet-like crystal structure and a higher ion conductivity than 3.4×10−6 S/cm into said battery, accumulator, supercap, fuel cell, sensor or electrochromic device, wherein the solid ion conductor has a stoichiometric composition of
- L5+xAyGzM3O12,
- and wherein L is in each case independently an arbitrary preferably monovalent cation,
- A is in each case independently a monovalent, divalent, trivalent or tetravalent cation,
- G is in each case independently a monovalent, divalent, trivalent or tetravalent cation
- M is in each case independently a trivalent, tetravalent or pentavalent cation,
- 0<x≦2, 0≦y≦3, 0≦z≦3 and
- wherein O can be partially or completely replaced by divalent and/or trivalent anions,
- and wherein at least one of A and G is a divalent cation.
A method of producing a battery, accumulator, supercap, fuel cell, sensor or electrochromic device having high energy density and chemical stability comprising incorporating a solid ion conductor having a garnet-like crystal structure and a higher ion conductivity than 3.4×10−6 S/cm into said battery, accumulator, supercap, fuel cell, sensor or electrochromic device, wherein said solid ion conductor has a stoichiometric composition of
- L5+xAxG3−xM2O12
- and wherein
- 0<x≦1,
- L is a monovalent alkali metal cation,
- A is a divalent metal cation,
- G is a trivalent cation, and
- M is a pentavalent cation.
Dependencies are inferred from the claim text.